The U.S. aircraft register, updated daily
Plan a flight · Mon 1:13 am CDT (06:13 UTC)

Duluth International to Rifle Garfield County DLH → RIL

807 nautical miles (929 statute miles) southwest on a straight line, true course 243°, about 244° magnetic at the departure end (variation 1W). At 120 knots that is 7 h 08 min at the quickest height in today's winds (4,500 ft, a 7-knot headwind), arriving about 7:21 am MDT (13:21 UTC). Right now DLH is VFR, wind from the east (080°) at 11 knots; RIL is VFR, wind from the west-southwest (240°) at 9 knots. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools. Airlines fly this pair: 1 flights in the DOT's last twelve reported months, the route's page.

The return flight

The route the straight line, the warnings crossed, restrictions, pilot reports and the airports along the way · click a mark for its words

Green, blue, red and purple airport dots are the flying conditions reported there now (VFR, marginal VFR, IFR, low IFR); grey means no report. Red areas are SIGMETs, orange areas AIRMETs, hatched red areas temporary flight restrictions. Map tiles: OpenFreeMap, data © OpenStreetMap contributors.

Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of

  • AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 169 to 518 nm out.
  • AIRMET TANGO 3W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the route from 478 to 528 nm out.
  • AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the last 269 nm of the route.
  • AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 219 nm of the route.
  • AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the last 140 nm of the route.
  • AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 20 nm of the route.

A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from DLH.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

  • urgent B737 at 7,600 ft, 31 nm northwest, 10:22 pm CDT (03:22 UTC): remarks: low-level wind shear 45 knots crosswind on final. 758 nm along the route, 31 nm northwest of the line.
    as filed, and in English
    HDN UUA /OV HDN/TM 0322/FL076/TP B737/RM LLWS 45 KTS CROSSWIND ON FINAL
    Report
    an urgent report filed through HDN
    Where
    over HDN
    Time
    03:22 UTC
    Height
    at 7,600 ft
    Aircraft
    B737
    Remarks
    low-level wind shear 45 knots crosswind on final
  • urgent E75L at 9,000 ft, 39 nm southeast, 11:30 pm CDT (04:30 UTC): remarks: low-level wind shear + 20K 1000-1500 above ground on approach. At the destination end, 39 nm southeast of the line.
    as filed, and in English
    ASE UUA /OV ASE/TM 0430/FL090/TP E75L/RM LLWS +/- 20K 1000-1500 AGL ON APCH
    Report
    an urgent report filed through ASE
    Where
    over ASE
    Time
    04:30 UTC
    Height
    at 9,000 ft
    Aircraft
    E75L
    Remarks
    low-level wind shear + 20K 1000-1500 above ground on approach
  • B38M at 21,500 ft, 8 nm southeast, 11:33 pm CDT (04:33 UTC): light turbulence up to 25,000 ft, remarks: during the descent flati star ZDVWC-13. 698 nm along the route, 8 nm southeast of the line.
    as filed, and in English
    DEN UA /OV DEN305065/TM 0433/FL215/TP B38M/TB LGT BLO 250/RM DURD FLATI STAR. ZDVWC-13
    Report
    a routine report filed through DEN
    Where
    65 nm northwest (305°) of DEN
    Time
    04:33 UTC
    Height
    at 21,500 ft
    Aircraft
    B38M
    Turbulence
    light below 25,000 ft
    Remarks
    during the descent flati star ZDVWC-13
  • BE20 at 16,000 ft, 0 nm east, 10:28 pm CDT (03:28 UTC): light chop turbulence, light rime icing, -3 °C, remarks: ZDVWC-11. At the destination end, 0 nm east of the line.
    as filed, and in English
    RIL UA /OV RIL/TM 0328/FL160/TP BE20/TA M03/TB LGT CHOP/IC LGT RIME/RM ZDVWC-11
    Report
    a routine report filed through RIL
    Where
    over RIL
    Time
    03:28 UTC
    Height
    at 16,000 ft
    Aircraft
    BE20
    Temperature
    −3 °C
    Turbulence
    light chop
    Icing
    light rime
    Remarks
    ZDVWC-11

Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 UTC · at 120 knots true airspeed

The westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 8 forecast points nearest it (DLH, AXN, ABR, PIR, RAP, BFF, DEN, GJT). A plus sign is a headwind, a minus sign a tailwind.

HeightAverage windHead- or tailwindTemperatureGround speedTime en routeArrival
4,500 ft180° at 14 kt+7 kt17 °C113 kt7 h 08 min7:21 am MDT (13:21 UTC)
6,500 ft210° at 18 kt+16 kt15 °C104 kt7 h 46 min7:59 am MDT (13:59 UTC)
8,500 ft220° at 24 kt+23 kt12 °C97 kt8 h 19 min8:32 am MDT (14:32 UTC)
10,500 ft230° at 28 kt+28 kt9 °C92 kt8 h 46 min8:59 am MDT (14:59 UTC)
12,500 ft230° at 32 kt+32 kt4 °C88 kt9 h 10 min9:23 am MDT (15:23 UTC)
14,500 ft230° at 33 kt+33 kt-1 °C87 kt9 h 17 min9:30 am MDT (15:30 UTC)
16,500 ft240° at 33 kt+34 kt-6 °C86 kt9 h 23 min9:36 am MDT (15:36 UTC)
18,000 ft FL180240° at 34 kt+34 kt-10 °C86 kt9 h 23 min9:36 am MDT (15:36 UTC)
24,000 ft FL240240° at 39 kt+40 kt-21 °C80 kt10 h 05 min10:18 am MDT (16:18 UTC)
30,000 ft FL300240° at 40 kt+41 kt-34 °C79 kt10 h 13 min10:26 am MDT (16:26 UTC)
34,000 ft FL340250° at 48 kt+47 kt-40 °C73 kt11 h 03 min11:16 am MDT (17:16 UTC)
39,000 ft FL390250° at 52 kt+51 kt-47 °C69 kt11 h 42 min11:55 am MDT (17:55 UTC)

Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; a height is left out when the forecast has no wind for it over most of the line (the ground is higher). Ground speed is the airspeed less the headwind; the time en route is for the straight line and ignores climb, descent and routing around weather.

The forecast points as issued
PointFrom3,0006,0009,00012,00018,00024,00030,00034,00039,000
DLHused from 0 nm out; 25 nm from the line080/28240/21 15°250/26 9°250/32 3°260/42 -11°270/40 -21°260/43 -36°260/46 -46°260/65 -54°
AXNused from 50 nm out; 71 nm from the line100/14250/21 14°240/24 12°240/31 5°260/36 -10°260/40 -21°250/42 -36°260/48 -45°260/53 -50°
ABRused from 199 nm out; 70 nm from the line070/14250/10 17°270/16 11°260/28 5°260/36 -10°260/41 -22°270/33 -37°260/42 -42°260/50 -48°
PIRused from 299 nm out; 62 nm from the line170/22 19°190/25 13°210/32 6°240/23 -9°250/32 -21°250/38 -36°260/44 -40°260/52 -47°
RAPused from 449 nm out; 94 nm from the line180/23 12°200/38 13°210/38 6°220/28 -10°230/34 -21°230/37 -36°250/52 -38°250/59 -46°
BFFused from 498 nm out; 49 nm from the line180/28220/33 15°210/31 7°230/32 -9°220/41 -21°220/40 -33°240/47 -36°250/54 -46°
DENused from 648 nm out; 70 nm from the line240/21 14°250/44 6°220/49 -8°220/49 -21°230/54 -30°240/57 -35°240/49 -45°
GJTused from 748 nm out; 79 nm from the line210/43 7°230/45 1°220/49 -12°220/62 -22°220/59 -28°230/60 -33°220/55 -45°

The weather now: both ends and the airports along the way public airports with a weather report within 25 nm of the line, one for each stretch

AirportWhereConditionsWindVisibilityCeilingElevationReported
DLH Duluth, MN departure VFR Sky: a broken layer at 12,000 feet from the east (080°) at 11 knots 10+ mi 12,000 ft 1,427 ft 12:55 am CDT (05:55 UTC)
COQ Cloquet, MN 20 nm out, 5 nm east of the line VFR from the east-northeast (070°) at 8 knots, gusting to 15 10+ mi none 1,279 ft 05:55 UTC
GHW Glenwood, MN 150 nm out, 2 nm east of the line VFR from the north-northeast (030°) at 9 knots 10+ mi none 1,393 ft 05:55 UTC
ATY Watertown, SD 239 nm out, 2 nm northeast of the line low IFR Sky: sky obscured at 200 feet Weather: fog from the north-northeast (030°) at 8 knots 0.5 mi 200 ft 1,749 ft 06:00 UTC
HON Huron, SD 289 nm out, 5 nm south of the line IFR Sky: overcast at 600 feet from the north (360°) at 9 knots 10+ mi 600 ft 1,288 ft 05:55 UTC
ICR Winner, SD 389 nm out, 18 nm southeast of the line low IFR Sky: overcast at 400 feet Weather: mist from the northeast (050°) at 7 knots 6 mi 400 ft 2,032 ft 05:53 UTC
SUO Rosebud, SD 429 nm out, 3 nm northeast of the line low IFR Sky: overcast at 300 feet Weather: mist from the east-northeast (060°) at 7 knots, gusting to 12 5 mi 300 ft 2,724 ft 05:55 UTC
AIA Alliance, NE 538 nm out, 11 nm southeast of the line VFR from the east (100°) at 5 knots 10+ mi none 3,930 ft 05:53 UTC
CYS Cheyenne, WY 638 nm out, 5 nm south of the line, tower VFR from the west (270°) at 9 knots 10+ mi none 6,159 ft 05:53 UTC
GNB Granby, CO 718 nm out, 24 nm southeast of the line VFR Sky: scattered clouds at 4,600 feet, scattered clouds at 9,000 feet from the west-southwest (240°) at 5 knots 10+ mi none 8,207 ft 05:55 UTC
EGE Eagle, CO 777 nm out, 18 nm southeast of the line, tower VFR Sky: scattered clouds at 9,000 feet, overcast at 11,000 feet from the west-northwest (290°) at 6 knots 10+ mi 11,000 ft 6,547 ft 05:56 UTC
RIL Rifle, CO destination VFR Sky: a few clouds at 8,000 feet, a broken layer at 9,000 feet, overcast at 11,000 feet Weather: light rain from the west-southwest (240°) at 9 knots 10+ mi 9,000 ft 5,536 ft 11:53 pm MDT (05:53 UTC)

The highest airport on this list sits at 8,207 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At RIL when you get there the forecast at the estimated arrival, 7:21 am MDT (13:21 UTC)

Wind from the southeast at 7 knots, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 6,000 feet VFR

30% chance between Mon 6:00 am MDT (12:00 UTC) and 12:00 pm MDT (18:00 UTC): visibility 4 miles, light rain showers, a broken layer at 4,000 feet marginal VFR

The whole forecast for RIL
  • From Mon 12:00 am MDT (06:00 UTC): wind from the east at 7 knots, visibility more than 6 miles, low-level wind shear, scattered clouds at 7,000 feet, a broken layer at 10,000 feet
  • At times between Mon 12:00 am MDT (06:00 UTC) and 4:00 am MDT (10:00 UTC): visibility 4 miles, light rain showers, a broken layer at 4,500 feet
  • From Mon 6:00 am MDT (12:00 UTC): wind from the southeast at 7 knots, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 6,000 feet
  • 30% chance between Mon 6:00 am MDT (12:00 UTC) and 12:00 pm MDT (18:00 UTC): visibility 4 miles, light rain showers, a broken layer at 4,000 feet
  • From Mon 12:00 pm MDT (18:00 UTC): wind from the west-northwest at 10 knots, gusting to 20, visibility more than 6 miles, a broken layer at 5,000 feet
  • From Mon 4:00 pm MDT (22:00 UTC): wind from the west-southwest at 9 knots, visibility more than 6 miles, a few clouds at 6,000 feet, scattered clouds at 9,000 feet
  • 30% chance between Mon 7:00 pm MDT (01:00 UTC) and 9:00 pm MDT (03:00 UTC): visibility 4 miles, light rain showers, a broken layer at 6,000 feet
  • From Mon 9:00 pm MDT (03:00 UTC): wind from the southeast at 8 knots, visibility more than 6 miles, light rain showers, a broken layer at 6,000 feet
  • 30% chance between Mon 9:00 pm MDT (03:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 4 miles, light rain showers, a broken layer at 4,500 feet
The forecast for DLH, the departure
  • From Mon 1:00 am CDT (06:00 UTC): wind from the east-northeast at 13 knots, visibility more than 6 miles, overcast at 9,000 feet
  • From Mon 4:00 am CDT (09:00 UTC): wind from the east at 15 knots, gusting to 26, visibility more than 6 miles, overcast at 600 feet
  • From Mon 7:00 am CDT (12:00 UTC): wind from the east at 16 knots, gusting to 26, visibility more than 6 miles, overcast at 200 feet
  • From Mon 7:00 pm CDT (00:00 UTC): wind from the east-northeast at 16 knots, gusting to 27, visibility 2 miles, light rain showers, mist, overcast at 200 feet

Temporary flight restrictions on the line or within 25 nm of it

No temporary flight restriction on or near this route right now.

Daylight

Sunset at DLH 6:27 pm CDT (23:27 UTC), at RIL 6:35 pm MDT (00:35 UTC) (civil twilight ends 7:02 pm MDT (01:02 UTC)).

Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.

Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads

Radar now, the upper Mississippi valley
Radar now, the upper Mississippi valley · loop National Weather Service
Radar now, the northern Rockies
Radar now, the northern Rockies · loop National Weather Service
Radar now, the southern Rockies
Radar now, the southern Rockies · loop National Weather Service
Radar, the whole country
Radar, the whole country · loop National Weather Service
Surface analysis now
Surface analysis now Weather Prediction Center
Forecast chart, 12 hours ahead
Forecast chart, 12 hours ahead Weather Prediction Center
Forecast chart, 24 hours ahead
Forecast chart, 24 hours ahead Weather Prediction Center

Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft, observations and terminal forecasts), the National Weather Service radar, the Weather Prediction Center's charts, the FAA's temporary flight restriction list and shapes, and the FAA's airport file for the positions, elevations and magnetic variation. Fetched when the page is viewed and kept a few minutes. Each leg is the straight line between its two airports; airways, terrain and airspace are not considered. The airports in detail: Duluth International, Rifle Garfield County.